It is a bit difficult to tell because of the stain. My 1st thought was with Hammer1 - pine. But I have a 2nd thought - cherry. The top looks pine because of the knots - but the 4th board from the right looks like a run of cherry sap wood. The legs also have a cherry look.
Afonso - I see this is your 1st post so welcome to the forum, a great place. If you take a screw driver and dent the underside of the top you can tell us if the wood is hard or soft. Hard wood will take pressure to dent it while soft woods are easy to dent. Try this is areas that people will not see.
Also, take a picture of the end grain - that will give us a lot more information then 100 more of the pictures you already gave us. Please take a close-up picture of the end grain...
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